rm5231a/5261a 64-bit mips risc microprocessor with 32/64-bit system bus pmc- 2010740 (r1) proprietary and confidential to pmc - sierra, inc., and for its customers? internal use ? copyright pmc - sierra, inc. 2000 features ? dual-issue 64-bit superscalar architecture high-performance 64-bit integer unit high-throughput fully pipelined 64- bit floating point unit (ieee754) high performance sysad interface 32-bit or 64-bit multiplexed system address/data bus for optimum price/performance available with 32-bit or 64-bit external bus interface supports fractional clock ratios ieee 1149.1 jtag boundary scan integrated primary caches 32kb instruction - 2-way set associative 32kb data - 2-way set associative virtually indexed, physically tagged write-back and write-through on per-page basis pipeline restart on first double word for data cache misses 64-bit mips instruction set architecture floating point multiply-add instruction increases performance in signal processing and graphics applications conditional moves to reduce branch frequency index address modes (register + register) integrated memory management fully associative joint tlb (shared by i and d transistors) 48 dual entries map 96 pages variable page size (4kb to 16mb) embedded application enhancements specialized dsp integer multiply- accumulate instructions (mad/madu) and 3 operand multiply instruction (mul) instruction and data cache locking by set optional dedicated exception vector for interrupts block diagram 64-bit integer unit dual-issue superscalar 64-bit fp unit double / single ieee 754 integer multiplier / accum. d-cache 32kb, 2- way, lockable i-cache 32kb, 2-way, lockable system control pc unit mmu 96 pages, (4kb ? 16 mb) bus interface unit instr. dispatch sysa / d bus 32-bit (5231a) 64-bit (5261a) nmi, int5 ? int0 int ctlr device cpu frequency (mhz) i/d cache external cache support external bus width external bus frequency (mhz) vccint (v) vccio (v) package rm5231a 250, 300, 350 32k/32k no 32-bit 100 1.65/1.8 2.5/3.3 128 qfp RM5261A 250, 300, 350 32k/32k no 64-bit 125 1.65/1.8 2.5/3.3 208 qfp
head office: pmc-sierra, inc. 8555 baxter place burnaby, b.c. v5a 4v7 canada tel: 604.415.6000 fax: 604.415.6200 64-bit mips risc microprocessor with 32/64-bit system bus to order documentation, send email to: document@pmc-sierra.com or contact the head office, attn: document coordinator pmc- 2010740 (r1) ? copyright pmc-sierra, inc. 2001. all rights reserved. rm5231a/and rm 5261a are trademarks of pmc-sierra inc. proprietary and confidential to pmc-sierra, inc., and for its customers? internal use rm5231a/5261a all product documentation is available on our web site at: http://www.pmc-sierra.com for corporate information, send email to: info@pmc-sierra.com development tools operating systems: linux by montavista and red hat vxworks by wind river systems nucleus by accelerated technology neutrino by qnx software systems compiler suites algorithmics green hills software red hat evaluation boards and companion chips algorithmics: p-6032 (rm5231a): 32-bit, 33mhz pci p-4052 (rm5231a): 32-bit, 33mhz pci galileo technology ev-64120a: (RM5261A): 32/64- bit, 33/66mhz pci ev-64115 (rm5231a): 32-bit, 33/66mhz pci v3 semiconductor v320usc (rm5231a): 32-bit, 50mhz pc v340hpc (RM5261A): 64-bit, 66mhz pci logic analyzers and emulation hp te k t r o n i x corelis crescent heart software marvell/galileo pci bus sdram devices gt-64120 64/32/16/8-bit 64/32-bit scsi network pci to pci bridge other data 64/32-bit address & control sysad 64/32-bit l3 cache (optional) rm52xx 64/32-bit 64/32-bit typical application
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